Determination of the Pressure Field Using Three-Dimensional, Volumetric Velocity Measurements

Autor:	Paul S. Krueger, Hansheng Pan, Sheila H. Williams
Rok vydání:	2016
Předmět:	Physics Mechanical Engineering Mechanics Stagnation point 01 natural sciences Pressure coefficient 010305 fluids & plasmas Physics::Fluid Dynamics 010309 optics Flow velocity 0103 physical sciences Fluid dynamics Dynamic pressure Potential flow Navier–Stokes equations Pressure gradient
Zdroj:	Journal of Fluids Engineering. 138
ISSN:	1528-901X 0098-2202
DOI:	10.1115/1.4033293
Popis:	Methods to determine the pressure field of vortical flow from three-dimensional (3D) volumetric velocity measurements (e.g., from a TSI V3VTM system) are discussed. The boundary pressure was determined where necessary using the unsteady Bernoulli equation for both line integration and pressure Poisson equation methods. Error analysis using computational fluid dynamics (CFD) data was conducted to investigate the effects of spatial resolution, temporal resolution, and velocity error levels. The line integration method was more sensitive to temporal resolution, while the pressure Poisson equation method was more sensitive to boundary flow conditions. The latter was generally more suitable for V3VTM velocity measurements.
Databáze:	OpenAIRE
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